Muffler



G. H. TABER.

MUFFLEH. APPLICATION FILED DEC. is, |919.

l Patented Sept. 28, 1920.

EEE-

. To all w krom t may concern UNI-TED STATES PATENT OFFICE.

GEORGE H. '1ABER, or BiNGHAMTON, NEW YORK, AssIGNOR To EMCO MANUFAC- TURING COMPANY, INC., or BINGHAMTON, NEW YORK, A CORPORATION OF YORK.

i MUFFLER.

Specification of Letters Patent. Patented Sept. 28, 1920.

' Application 1ed `December 18, 1919. rSerial No. 845,700,

v Beit known that I, GEORGE H. TABnR, a citizen of the United States of America, and a resident of Binghamton, in the county of Broome and *State of New York, have invented certain new and useful Improvements 'in Muffleraof which the following is a specification.v

This invention relates to improvements in muiiiers for. gas engines, etc., and the object of the invention is to provide an extremely simple form of muflier containing in its preferable embodiment, two main parts secured together on longitudinal lines and having clamped between them the bale plates usually employed for muifling the sound and absorbing the explosions.

With thisY object in view, my invention consists in the arrangement and combination of parts hereinafter described and then definitely claimed. y

' In the drawings accompanying and forming part hereof:

Figure 1 is a perspective view of my muflier. n

Fig. 2 is a longitudinal central section of the same. v

Fig. 3 is a cross section through the line 3 3 yofFig. 2;

F ig. 4 is a cross section through the line 4 4 of Fig. 2.

of the other.

Referring now to the details of the drawings by numerals: My muffler comprises two main parts 1 and 2, each of which may be a casting and one a substantial counterpart of my invention, the'castings 1 and -2are provided with interior bosses 5 and 6 which project toward and meet each other, a fillister screw '7 being employed to'firmly secure the parts together, as illustrated in Fig. 3, a lock washer 9 being employed under the head of said screw 7. The castings 1 and 2 mayalso be provided with ears 8 and 10, bolts 12 and 14 being employed to firmly secure these ears together, lock washers 13 being employed to hold the nuts on said bolts. The inlet end of the muffler is provided with two reduced portions 16 and 18 between which the exhaust pipe from the engine is clamped when the aforesaid bolts 12 and 14 are screwed home. The exhaust end of the muiller is also provided with two In the most desirable form Vthe short pipe 24 at the rear end of the muilier, as said parts 2O and 22 are secured together by said iillisterV screw 7. The interior of the castings 1 and 2 contains baffle plates 26, 28 and 30 of any desirable number, three being illustrated in Fig. 2. These baffle plates may be provided with the usual openings in staggered relation with each other commonly found in baiiie plates of mufliers. The interior surfaces of the castings 1 and 2 are provided with ribs 33 and 34` leaving groovesbetween them and also with lugs 36 and 38, the ribs being preferably on the sides and the lugs on the top and bottom.

I desirey to call particular attention to these ribs and lugs. They are somewhat of saw-teeth shape and are purposely so cast that the grooves in them are slightly less in diameter than the interior diameter of the castings. In other words, the bottom of the groove in said saw-tooth ribs and lugs is not flush with the inside contour of thecastings, but is about an eighth of an inch above the same. This serves two purposes as lfollows: first, it provides slight spaces between the disks and the inside contour of the castings, between the ribs and lugs, to allow a certain percentage of the gases to pass therethrough, and, second, the disks are caused to buckle slightly thus having a spring to keep the disks tight.

The construction of my muffler is so simple that it is believedno description of its operation is necessary except to state that the gases from the engine as they enter the muiiler strike first against the first baffle plate, and then are broken up, part passing through the openings thereof and part pass ing through the slight spaces between the edges of the baiile and the interior wall of the castings, and then the gases meet the second baiile and, after being again broken up, strike the third baffle, and after passing this, the gases meet the interior lugs 5 and 6, which divide the interior of the muffler.I and deflect the gases so as to compel them to divide and pass around said lugs 5 and 6, thus still further reducing the sound, before the gases finally pass out of the discharge of the muler.

my muffler consists of two main partswasql and@A preferably secured together by three, bolts'or screws and so constructed andfitted together that asthe longitudinally split Vparts l. and 2 are Vserewed firmly together the aftle plates ,26, l28 andSO are at the saine tinie firmly secured in position in the 'grooves` between the longitudinal "ribs and 34 and the lugs 36 andY 38. VYllhels'aine sorewsalsog serve to clamp the inlet and exhaust pipes within the longitudinally split muffler-.v .j

`It will be obvious that modifieations and changes .maybe inade without departingv roin the spirit ofiny' invention, the scope offwhichs set forthby theappended claims.4

Whatl claim asiny invention is:

'Y l. ln a mufer, the combination offra casing` consistingof two main partsjoined on a longitudinal line, each part having lugs on the interior wall thereof, and baffle plates securedbetween said lugs as the two parts of the casing are secured together, said bathe plates havinga space betweenthemand the interior wallsjof theA casing forthe passage. `of the gases, substantially asdesoribed.

V2.v ln a inuflier, the combination ofya oasf ing consisting of two main partsjoinedron'a longitudinallineeach )art havinO ribs and luos onthe interior wall thereof andebaflie plates secured between said ribs-and lugsas lthetwo parts ofthe-easinglare seouiedtof gether, said'baffie plates'having a space between theni and Lthe interior walls ofthe casing for the passagel of the gases, substantiallymas' described. Y

[3. ln a muffler, the combination ofacasingeonsistingoftwo-inain parts joinedon a Vl'ongitudinal line, veach part having lugs on the interiorfwallthereof,E and batlie plates Vsecured between saidlugsV as the 4two parts of the'casing are secured together, said baffle platesbeing buclrledv by. said lugs as they are-clamped in position as the two parts of the Inufier are secured togetheigfsubstantially'as desoiibedi-t 1 f d e. -n ajrnuflienthe combination of a Cas-v ing".consistingf oftwo castings Joined on a longitudinal line, eachcasting Vhaving a ref l ldgpart ateaoh end thereof,lugs east on t the interior of said.Y castings, and balile plates held "n Voositionpwithinthe castings by said lugsfthe two partsof the casting being se- Vsoribed. p Y Y n 7 In a muffler, thecombination of a oas`' cured together thereby holding baffle plates in position, substantially asdesoribed.

5. In muffler, the, combination of a oasing yconsisting of two Castings joinedfon a longitudinal line, Yeach `casting v*having aA reduced part at each end thereof,-lugsffcast on the interior of said castingsjbaffle `plates held in position within the castingsv by` said lugs, "alug" projecting from the "interior-.of

eachoasting, andasorew passingthrough one of said lugs and threaded intothe other i thereby securingthe two parts ofthe castingV together-and holding the bafle platesin position, substantially; as described.; l 46. a inutlier, the combination of 'a eas-V ing consistingV of two castings'joinedr on a longitudinal line, eaeh Vcasting having a reduced part at each end thereof, the two.re

duced parts at each end of the casing forniing a ineans of Connecting to the Vexhaiist ofy the engine and to. thetailpipe, lugs cast on the, interior of saidV castings,baliie VVplates heldin position vwithin the castings by saidv lugs,andscrews for securing the twofpar'ts of said-casing together thereby holding the baffle plates in positionand securing the eX: haust pipeand tailpipe within the reduced part-sof the castingss substantially asf deing consisting of twoinain castings joined on a longitudinal line, each .castinghaving lugs on the interior wallthereof, badlle,platesl secured between said Vlugs as the twoparts of the casing are secured together, saidV baffle plates having a space between thein andthe interior walls of the easing yfor the passage` of the gases, lugs projecting froin'eaohoast-f ing, and a screwV .passingV through one of: said lugs and threaded into the otherkthereby'sey 'i GEORGE (H.

'Witnesses f d FRANK J. MANGAN,

A CHARLES J. PinizsoN.

Tiiis;

Y ouringthe two castings together and holding` 

